Knife-sharpener.



` A;.'1. PRENOSIL'; vKNIFE sHAaPEN'gR." -APPLl'cATloN f xubr'm, 19m i ll,g 17819-99, Patented Apr. 14,1915.

.tien between ANTHONY'J. PRnNosIL.

OF DWIGHT. NEBRASKALASSIGNOR OF ONE-HALF TO JOHN F.

i KRENK, 0F DWIGHT, NEBRASKA.

-KNIFn-SHARPENER.

Specificationof Letters Patent.

Patented Apr. 4, 1916.

Application lcd January 2.9, 1915. Serial No. 5,102.

To (IZZ whom t may concern.'

Be it known that I, x'rnoxv J. Pnuxosrn, a ,citizen of the UnitedStates, residing at Dwight, in the county of Butler and State ofNebraska, have invented certainY new and useful Improvements inKnife-Sharpeners, ofvhich the following is a specification.

My invention relates to sharpening devicesand more particularly to adevice for sharpening knives or (ther cutlery..

The primary object of this invention resides in the provision of a knifeslrarpener embrdying spaced resilient arms for sup porting abradingmeans on the adjacent inner faces thereof, the arms being bent outwardlyabove the abrading means to provide finger engaging portions wherebywhen these portions are engaged by the fingers of the operator andpressed together, the fricthe abrading means and a knife or (therimplement. movable therebetween. will be consequently increased. l

A still further object of my invention resides in the provision of adevice of the character described thatis simple in construction,efficient in operation and one that can be manufactured and placed onthe market at a minimum cest.

Other objects as well as the nature. characteristic features and scopeof my invention will be more readily understood from the followingdescription taken in connection with the accompanying drawings andpointed out in the claim forming a part of this specification.

In the drawings: Fig-ure 1 represents a perspective view of myinvention. the dotted lines showing a knife associated therewith. Fig. 2represents a longitudinal, sectional view of my invention. i Fig. 8represents a transverse sectional view taken on the line 3-3 of Fig. 2in the direction in which the arrow points.v

Referring more particularly to the drawings in which similar referencenumerals designate like or corresponding parts throughout the differentviews, I provideniv improved supporting means or holder which in thisinstance is formed preferably from a single strip of sheet metal bentintermediate its ends int a substantially U-shaped configuration. thevertex being arranged into a substantially cylindrical formation toprovide a bow spring 1, the arms 2 and 3 of the holder extending fromthe spring being arranged in spaced parallel relation with each'portions 5 for a purpose to be hereinafter referred to.

In order to provide a suitable means for sharpening the blade of a knifeor other piece of cutlery I have provided oblong file blocks 6 and haveremovably secured the said blocks to the inner surface of the arms bymeans ofscrews or like fastening devices 7 which pass throughthe'opening 8 in the arms and engage the rear surfaces of the blocks 6.Attention is directed to the peculiar manner in which the blocks arearranged between the arms. inner ends thereof are arranged insubstantial alinement with the point of juncture of the arms with thespring and the outer ends extend slightly above the plane of the outeredges of the finger engaging portions 5. The linger engaging portions 5are bent outwardlv at the points 4. the said points being positioned ata point substantially intermediate the'inner and outer ends of theblocks. By this arrangement an equal amount of pressure may at all timesbe arranged on the blccks while a knife or other piece of cutlery isbeing sharpened. .Furthermore due to the resiliency of the material fromwhich the arms are formed the finger engaging portions may be pressedt0- ward each other when it is desired to in-' crease the frictionbetween the blocks at the outer ends thereof. The blocks have theirextreme o-uter ends beveled as at 9 thus affording a suitable surfacewhereby the fingers of the user, not shovvn,l are adapted to engageshould a strong pressure on the block be desired. A set screw eve 10 isremovably engaged in the spring and constitutes a suitable means forsupporting the holder on a nail or the like, not shown.

The operation of my invention is as follows: A knife or other piece ofcutlery is placed between the spaced surfaces of the abrading blocks 6and slid transversely therebetween, the holder being held in one hand ofthe operator, not shown, during this friction between the, abrasiveblocks, the 4 fingers of the hand which engage the holder' are engagedupon the finger portions 5 and pressed together,I 4to consequently cansethe blocks to more liriniy engage the sides of the knife. Shruld it bedesired to replace the blocks 6 v en they have become worn it is onlynecessary to remove the screws 7 and replace new blocks, the operationbeing obvious.

Although I have shown and described the preferred embodiment of myinvention I do not wish to limit niyselt1v to the exact structure shown,however, particular attention is directed to the peculiar arrangement(inthe-finger portions 5 in the manner in which they copei'ate with theabrading blocks for producing an efficient means for governing thefriction between the device when in operation.

From the above description taken in connection with the. accompanyingdrawings, it can easily be seen that I have provided a device that issimple in construction, containing' but a few simple parts that can becheaply manufactured and assembled and when assembled can be' placedupon the market. and Sold at a minimum cost.

It will be understood that the above dcscription and accompanyingdrawings coinpreliend only the general embodiment o'l niy invention andthat various minor Y changes in detail of construction, proportiox.

and arrangement of the parts may be made within the scope of theappended claim and without sacrificing any of the advantages of myinvention. l

Having thus Jfully described my invention, what I claim as new anddesire to secure by Letters Patent, is

A knife Sharpener formed from a single strip of sheet metal including apair of parallel spaced resilient supporting' arms, Alornied by bendingthe metal upon itself, a bow spring provided at the bend, a file blockassociated with the inner surfaces of each of the arms, fastei'iinfrvdevices for removably holding` the blocks on the arms, finger engagingportions formed by bending the outer ends. ofy the arms outwardly from apoint substantially intermediate the ends of the block and engageablbyVthe lingers of the operator for pressing the blocks together forconsequently increasing the fric tion of the blocks with a tool.

In testimony whereof I aflix my signa ture in presence of-two witnesses.

ANTHONY J. PRENOSIL. lVitnesses l i Jol-1N A. BYRNE, Jos. HUET.

